Cement-mixer.



30.5mm. CEMENT MIXER.

APPLICATION FILED BEPT.17,191-2.

- Patented Dec. 17, 1912.

snow Wop ,Eam (1][0 772/ NI D stra'rns PATENT.

FRANK C. HORN, OF BOISE, IDAHO.

CEMENT-MIXER.

To all whom it may concern:

Be it known that I, FRANK-G HORN, a citizen of the United States, residing at- Boise, in the county of Ada and State of Idaho, have invented certain new and useful Improvements in Cement-Mixers, of which the following is a specification.

My invention relates to improvements in cement mixers, and refers particularly to that type of cement mixers using compressed air as the moving agent.

The primary object of the invention is to provide a cement-mixer in which the cement in a dry state may be introduced into the mixing chamber and thoroughly coinmingled with the water to reduce the same to a plastic, semi-liquid, or liquid'state by means of air under pressure.

Another object of the invention is to provide a cement mixer which will'be of the simplest and most inexpensive construction to insure a thoroughly practical and etlicient device of this kind; which will thoroughly and reliably 'commingle the cement and water and deliver the same under pressure out of a discharge nozzle by the use of compresesd air as a mixing and carryin agent; and which Wlll 1n general prove esirable and efficient from every point ofview.

To attain the desired objects, the invention broadly stated consists of a mixing chamber, means for separately introducing cement and water thereinto, and pneumatic means for mixing and discharging said mixture from said chamber, the invention further consisting of certain novel features of construction and arrangements of parts,substantially as shown, described and claimed hereinafter, reference being had to the accompanying drawing, in which-- Figure 1 is a side elevation of a mixer constructed in accordance with and embodying the principles of the invention, the part-i above the central longitudinal line 'A---A being shown in section, and t-hose parts below said line being shown in elevation, and Fig. 2 1s a vertical sectional View on line 22 of Fig. 1, looking at the mixer from the discharge end thereof. Referring more specifically to the drawings, in which similar characters of reference denote corresponding parts in the views :-The letter A designates a cylina space B to contain the water supplied t ereto by means of the connection C with a suitable water supply.

Specification of Letters Patent.

Application filed September 17, 1912. Serial No. 720,749.

'in a dry state is introduced, and said pipe is further provided with an extension H, which has a connection H threaded onto one of its ends through which the air under pressure passes to thoroughly commingle the water and cement and discharge the same out of'the other end of the pipe or mixing chamberE, onto which end is threaded a discharge nozzle J to secure concentration of the materials and line of direc- Patented free. it

tion. A drain cock K is provided for the water jacket, as shown. Y From this construction it Will be seen that the water is supplied to the water circulation space B by means.

of the connection 0, and that he water enters the mixing chamber E under pressure through said perforations F, where it is conamingled with the dry cement fed into said chamber through the connection G of the hopper or other receptacle (not shown) by means of the compressed air delivered into-said chamber through the connection H. The water and cement ate thus thoroughly mixed by the air and are conveyed to the forward end of the chamber thereby and are discharged through the nozzle J upon the walls or other surface to be filled. The

,amount of water or cement admitted tothe chamber may be cont-rolle V in any suitable manner to render the mixture plastic, semiliquid, or liquid, as desired.

From the foregoing description, taken in connection with the accompanying draw ings, the construction and opeh'ation of my improved cement mixer will be readily seen and understood.

I claim 2- 1. A cement mixer, comprising a mixing chamber having a perforated shell, a jacket surrounding said mixing chamber forming av Water chamber in communication with said mixing chamber, means for supplying material to said mixing chamber, means for supplying water to said water chamber, and means for exerting a pneumatic pressure upon the materials in said mixing chamber.

2. A cement mixer. comprising a cylindrical mixing chamber having a penfmiated one end of said mixing chamber to supply shelh a cylindrical jacket surrounding said air under pressure to said mixing chamber. 10 mixing chamber forming a Water chamber In testimony whereof I aflix my signature in communication with said mixing chaIn-' in presence of two Witnesses.

5 her, a connection to supply water under pres- FRANK C. HORN.

sure to said ater chamber, a connection to \Vitnesses: supply material in a dry state at one end C. L. HUFF, of the mixing chamber, and a connection at E. L. TURNER. 

